In 1963 schoolgirl Alison Carter disappears from the village of Scardale and young policeman George Bennett investigates. Although there is no body it is treated with the seriousness of a murder case, suspects numbering Alison's school-friend Charlie Lomas, though he is eliminated from enquiries and her uncle Simon, a known sex offender, who is later found dead in a field, an apparent suicide. Further evidence points towards Alison's stepfather, Philip Hawkin, an aloof man disliked by the locals and when a gun is stolen from a friend of Hawkin's, George pulls him in for interview. Forty years later Catherine Heathcote, a London-based journalist who was brought up in Scardale by her alcoholic mother, returns to the village with her teen-aged daughter Sasha to make a film about the disappearance.